methods: numerical;
methods: statistical;
stars: kinematics and dynamics;
globular clusters: general;
N-BODY SIMULATIONS;
FOKKER-PLANCK MODELS;
MASS BLACK-HOLES;
GLOBULAR-CLUSTERS;
DYNAMICAL EVOLUTION;
DIRECT INTEGRATION;
STELLAR EVOLUTION;
SYSTEMS;
GALAXY;
ORBITS;
D O I:
10.1093/mnras/stu1426
中图分类号:
P1 [天文学];
学科分类号:
0704 ;
摘要:
We present a new implementation of the Monte Carlo method to simulate the evolution of star clusters. The major improvement with respect to the previously developed codes is the treatment of the external tidal field taking into account for both the loss of stars from the cluster boundary and the disc/bulge shocks. We provide recipes to handle with eccentric orbits in complex galactic potentials. The first calculations for stellar systems containing 21 000 and 42 000 equal-mass particles show good agreement with direct N-body simulations in terms of the evolution of both the enclosed mass and the Lagrangian radii provided that the mass-loss rate does not exceed a critical value.